UniProtKB - Q3TL26 (TFB2M_MOUSE)
Protein
Dimethyladenosine transferase 2, mitochondrial
Gene
Tfb2m
Organism
Mus musculus (Mouse)
Status
Functioni
S-adenosyl-L-methionine-dependent rRNA methyltransferase which may methylate two specific adjacent adenosines in the loop of a conserved hairpin near the 3'-end of 12S mitochondrial rRNA (By similarity). Component of the mitochondrial transcription initiation complex, composed at least of TFB2M, TFAM and POLRMT that is required for basal transcription of mitochondrial DNA (PubMed:15526033). In this complex, TFAM recruits POLRMT to a specific promoter whereas TFB2M induces structural changes in POLRMT to enable promoter opening and trapping of the DNA non-template strand (PubMed:15526033). Stimulates transcription independently of the methyltransferase activity (By similarity).By similarity1 Publication
Catalytic activityi
- adenosine in rRNA + S-adenosyl-L-methionine = H+ + N6-methyladenosine in rRNA + S-adenosyl-L-homocysteineBy similarity
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Binding sitei | 74 | S-adenosyl-L-methionine; via amide nitrogenPROSITE-ProRule annotation | 1 | |
Binding sitei | 123 | S-adenosyl-L-methioninePROSITE-ProRule annotation | 1 | |
Binding sitei | 149 | S-adenosyl-L-methioninePROSITE-ProRule annotation | 1 |
GO - Molecular functioni
- mitochondrial transcription factor activity Source: GO_Central
- RNA binding Source: UniProtKB-KW
- rRNA (adenine-N6,N6-)-dimethyltransferase activity Source: GO_Central
- transcription coregulator activity Source: InterPro
GO - Biological processi
- mitochondrial transcription Source: MGI
- regulation of transcription, DNA-templated Source: InterPro
- rRNA methylation Source: GO_Central
- transcription initiation from mitochondrial promoter Source: UniProtKB
Keywordsi
Molecular function | Methyltransferase, RNA-binding, Transferase |
Biological process | rRNA processing, Transcription, Transcription regulation |
Ligand | S-adenosyl-L-methionine |
Enzyme and pathway databases
Reactomei | R-MMU-163282, Mitochondrial transcription initiation |
Names & Taxonomyi
Protein namesi | Recommended name: Dimethyladenosine transferase 2, mitochondrialCurated (EC:2.1.1.-By similarity)Alternative name(s): Mitochondrial 12S rRNA dimethylase 2 Mitochondrial transcription factor B2 Short name: mTFB2M Short name: mtTFB2 S-adenosylmethionine-6-N', N'-adenosyl(rRNA) dimethyltransferase 2 |
Gene namesi | Name:Tfb2mImported |
Organismi | Mus musculus (Mouse) |
Taxonomic identifieri | 10090 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Mus › Mus |
Proteomesi |
|
Organism-specific databases
MGIi | MGI:107937, Tfb2m |
Subcellular locationi
Mitochondrion
- Mitochondrion By similarity
Mitochondrion
- mitochondrial matrix Source: MGI
- mitochondrial nucleoid Source: MGI
- mitochondrion Source: MGI
Keywords - Cellular componenti
MitochondrionPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Transit peptidei | 1 – 43 | MitochondrionSequence analysisAdd BLAST | 43 | |
ChainiPRO_0000273180 | 44 – 396 | Dimethyladenosine transferase 2, mitochondrialAdd BLAST | 353 |
Proteomic databases
EPDi | Q3TL26 |
MaxQBi | Q3TL26 |
PaxDbi | Q3TL26 |
PeptideAtlasi | Q3TL26 |
PRIDEi | Q3TL26 |
PTM databases
iPTMneti | Q3TL26 |
PhosphoSitePlusi | Q3TL26 |
Expressioni
Tissue specificityi
Ubiquitously expressed.1 Publication
Gene expression databases
Bgeei | ENSMUSG00000026492, Expressed in brown adipose tissue and 75 other tissues |
Genevisiblei | Q3TL26, MM |
Interactioni
Subunit structurei
Homodimer.
Component of the mitochondrial transcription initiation complex, composed at least of TFB2M, TFAM and POLRMT. In this complex TFAM recruits POLRMT to the promoter whereas TFB2M induces structural changes in POLRMT to enable promoter opening and trapping of the DNA non-template strand.
Interacts with mitochondrial RNA polymerase POLRMT.
Interacts with TFAM.
By similarityProtein-protein interaction databases
BioGRIDi | 200317, 4 interactors |
STRINGi | 10090.ENSMUSP00000027769 |
Miscellaneous databases
RNActi | Q3TL26, protein |
Family & Domainsi
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 328 – 329 | DNA bindingBy similarity | 2 |
Sequence similaritiesi
Belongs to the class I-like SAM-binding methyltransferase superfamily. rRNA adenine N(6)-methyltransferase family. KsgA subfamily.PROSITE-ProRule annotation
Keywords - Domaini
Transit peptidePhylogenomic databases
eggNOGi | KOG0820, Eukaryota |
GeneTreei | ENSGT00950000183142 |
HOGENOMi | CLU_051778_1_0_1 |
InParanoidi | Q3TL26 |
OMAi | GRCEMIL |
OrthoDBi | 1169941at2759 |
PhylomeDBi | Q3TL26 |
TreeFami | TF325100 |
Family and domain databases
InterProi | View protein in InterPro IPR001737, KsgA/Erm IPR020598, rRNA_Ade_methylase_Trfase_N IPR029063, SAM-dependent_MTases IPR016861, TFB2M |
PANTHERi | PTHR11727, PTHR11727, 1 hit PTHR11727:SF13, PTHR11727:SF13, 1 hit |
Pfami | View protein in Pfam PF00398, RrnaAD, 1 hit |
SMARTi | View protein in SMART SM00650, rADc, 1 hit |
SUPFAMi | SSF53335, SSF53335, 1 hit |
PROSITEi | View protein in PROSITE PS51689, SAM_RNA_A_N6_MT, 1 hit |
i Sequence
Sequence statusi: Complete.
: The displayed sequence is further processed into a mature form. Sequence processingi
Q3TL26-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MRGPAMRLPP RIALSALARG PSCILGSGAA TRKDWQTRNR RGFSDFNIEP
60 70 80 90 100
LPDSDLEESS PWTSRNRSEP TRHIACKKAA RNLVRDLLEH QNPSRQIILE
110 120 130 140 150
CNPGPGILTG ALLKAGARVV AFESEKTFIP HLEPLQRNMD GELQVVHCDF
160 170 180 190 200
FKMDPRYQEV VRPDVSSQAI FQNLGIKAVP WSAGVPIKVF GILPYKHERR
210 220 230 240 250
ILWKILFDLY SCESIYRYGR VELNMFVSEK EFRKLIATPK RPDLYQVMAV
260 270 280 290 300
LWQVACDVKF LHMEPWSSFS VHTENGHLEK SKHGESVNLL KQNLYLVRMT
310 320 330 340 350
PRRTLFTENL SPLNYDIFFH LVKHCFGKRN APIIRHLRSL STVDPINILR
360 370 380 390
QIRKNPGDTA ARMYPHDFKK LFETIEQSED SVFKWIYDYC PEDMEF
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 12 | I → L in AAA37817 (Ref. 1) Curated | 1 | |
Sequence conflicti | 40 | R → G in AAA37817 (Ref. 1) Curated | 1 | |
Sequence conflicti | 273 | T → M in AAA37817 (Ref. 1) Curated | 1 | |
Sequence conflicti | 292 | Q → P in BAC41095 (PubMed:16141072).Curated | 1 | |
Sequence conflicti | 308 | E → G in BAC41095 (PubMed:16141072).Curated | 1 | |
Sequence conflicti | 324 | H → P in BAC41095 (PubMed:16141072).Curated | 1 | |
Sequence conflicti | 330 | N → H in BAC41095 (PubMed:16141072).Curated | 1 | |
Sequence conflicti | 338 | R → P in BAC41095 (PubMed:16141072).Curated | 1 | |
Sequence conflicti | 377 | Q → P in BAC41095 (PubMed:16141072).Curated | 1 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | M74555 mRNA Translation: AAA37817.1 AK090106 mRNA Translation: BAC41095.1 AK146563 mRNA Translation: BAE27262.1 AK166717 mRNA Translation: BAE38967.1 AK167930 mRNA Translation: BAE39934.1 AK168970 mRNA Translation: BAE40774.1 AK169138 mRNA Translation: BAE40917.1 |
CCDSi | CCDS15561.1 |
PIRi | S27870 |
RefSeqi | NP_001317984.1, NM_001331055.1 NP_032275.2, NM_008249.5 |
Genome annotation databases
Ensembli | ENSMUST00000027769; ENSMUSP00000027769; ENSMUSG00000026492 |
GeneIDi | 15278 |
KEGGi | mmu:15278 |
UCSCi | uc007dvl.1, mouse |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | M74555 mRNA Translation: AAA37817.1 AK090106 mRNA Translation: BAC41095.1 AK146563 mRNA Translation: BAE27262.1 AK166717 mRNA Translation: BAE38967.1 AK167930 mRNA Translation: BAE39934.1 AK168970 mRNA Translation: BAE40774.1 AK169138 mRNA Translation: BAE40917.1 |
CCDSi | CCDS15561.1 |
PIRi | S27870 |
RefSeqi | NP_001317984.1, NM_001331055.1 NP_032275.2, NM_008249.5 |
3D structure databases
SMRi | Q3TL26 |
ModBasei | Search... |
Protein-protein interaction databases
BioGRIDi | 200317, 4 interactors |
STRINGi | 10090.ENSMUSP00000027769 |
PTM databases
iPTMneti | Q3TL26 |
PhosphoSitePlusi | Q3TL26 |
Proteomic databases
EPDi | Q3TL26 |
MaxQBi | Q3TL26 |
PaxDbi | Q3TL26 |
PeptideAtlasi | Q3TL26 |
PRIDEi | Q3TL26 |
Protocols and materials databases
Antibodypediai | 34721, 251 antibodies |
Genome annotation databases
Ensembli | ENSMUST00000027769; ENSMUSP00000027769; ENSMUSG00000026492 |
GeneIDi | 15278 |
KEGGi | mmu:15278 |
UCSCi | uc007dvl.1, mouse |
Organism-specific databases
CTDi | 64216 |
MGIi | MGI:107937, Tfb2m |
Phylogenomic databases
eggNOGi | KOG0820, Eukaryota |
GeneTreei | ENSGT00950000183142 |
HOGENOMi | CLU_051778_1_0_1 |
InParanoidi | Q3TL26 |
OMAi | GRCEMIL |
OrthoDBi | 1169941at2759 |
PhylomeDBi | Q3TL26 |
TreeFami | TF325100 |
Enzyme and pathway databases
Reactomei | R-MMU-163282, Mitochondrial transcription initiation |
Miscellaneous databases
BioGRID-ORCSi | 15278, 4 hits in 17 CRISPR screens |
ChiTaRSi | Tfb2m, mouse |
PROi | PR:Q3TL26 |
RNActi | Q3TL26, protein |
SOURCEi | Search... |
Gene expression databases
Bgeei | ENSMUSG00000026492, Expressed in brown adipose tissue and 75 other tissues |
Genevisiblei | Q3TL26, MM |
Family and domain databases
InterProi | View protein in InterPro IPR001737, KsgA/Erm IPR020598, rRNA_Ade_methylase_Trfase_N IPR029063, SAM-dependent_MTases IPR016861, TFB2M |
PANTHERi | PTHR11727, PTHR11727, 1 hit PTHR11727:SF13, PTHR11727:SF13, 1 hit |
Pfami | View protein in Pfam PF00398, RrnaAD, 1 hit |
SMARTi | View protein in SMART SM00650, rADc, 1 hit |
SUPFAMi | SSF53335, SSF53335, 1 hit |
PROSITEi | View protein in PROSITE PS51689, SAM_RNA_A_N6_MT, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | TFB2M_MOUSE | |
Accessioni | Q3TL26Primary (citable) accession number: Q3TL26 Secondary accession number(s): Q61669, Q8BTJ2 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | January 23, 2007 |
Last sequence update: | October 11, 2005 | |
Last modified: | February 10, 2021 | |
This is version 129 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
Reference proteomeDocuments
- MGD cross-references
Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot - SIMILARITY comments
Index of protein domains and families